ABB A43

Communication with M-Bus
2CMC48001M0201 285 A43/A44
Revision: C User Manual
10.5.22 Reset power outage time
Reset of power outage time is performed by sending the following command
(all values are hexadecimal). The command is not affected by the write
protection level set.
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
07
L-field, calculated from C field to last user data
3
1
07
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
7
1
51
CI-field, data send, LSB first
8
1
00
DIF size, no data
9
1
FF
VIF next byte is manufacturer specific
10
1
EC
VIFE power outage time
11
1
07
VIFE clear
12
1
xx
CS checksum, calculated from C field to last data
13
1
16
Stop character
10.5.23 Send password
Password is sent with the following command (all values are hexadecimal).
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
0E
L-field, calculated from C field to last user data
3
1
0E
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
Xx
A-field, address
7
1
51
CI-field, data send, LSB first
8
1
07
DIF size, 8 byte integer
9
1
FD
VIF extension of VIF codes
10
1
16
VIFE password
11-18
8
xxxxxxxxxxxxxxxx
Password
19
1
xx
CS checksum, calculated from C field to last data
20
1
16
Stop character
10.5.24 Set password
Password is set by sending the following command (all values are hexadecimal).
Note – If the meter is password protected the old password must be sent before a new
can be set.